CN101897129B - Method and arrangement for adjusting transmission power by-adjusting a gain factor in a communication system - Google Patents
Method and arrangement for adjusting transmission power by-adjusting a gain factor in a communication system Download PDFInfo
- Publication number
- CN101897129B CN101897129B CN2007801018937A CN200780101893A CN101897129B CN 101897129 B CN101897129 B CN 101897129B CN 2007801018937 A CN2007801018937 A CN 2007801018937A CN 200780101893 A CN200780101893 A CN 200780101893A CN 101897129 B CN101897129 B CN 101897129B
- Authority
- CN
- China
- Prior art keywords
- channel
- gain factor
- affirmation
- receiving node
- node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/16—Deriving transmission power values from another channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/12—Outer and inner loops
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/48—TPC being performed in particular situations during retransmission after error or non-acknowledgment
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Methods and arrangements for generating adjustment commands in a node. The adjustment commands adjust the transmission power of radio signals. The radio signals are sent over at least a first channel and a second channel. The adjustment is performed by adjusting a gain factor. The gain factor is associated with the relation between a first transmission power level of a first channel and a second transmission power level of a second channel.
Description
Technical field
The present invention relates to the method and apparatus in the communication system, relate to particularly for the method and apparatus that generates the adjustment order of the transmitted power of adjusting radio signal by adjusting gain factor.
Background technology
In the communication system based on for example code division multiple access (CDMA), control to satisfy required quality of service goals with exterior ring power.Can implement this exterior ring power in subscriber equipment controls to satisfy the downlink quality target and can implement to satisfy the uplink quality target in the base station.In cordless communication network, down link is the transmit path from the base station to the subscriber equipment, and up link is the transmit path from the subscriber equipment to the base station.Importantly, no matter the radio condition (this is common situations in wireless communication system) that changes, exterior ring power control can be kept required service quality.
The different technologies viewpoint relevant with inner-loop power control, exterior ring power control and the fusion in cdma system thereof is described below.Particularly, method and apparatus described herein relates to Wideband Code Division Multiple Access (WCDMA) (WCDMA), but because power control (interior ring and outer shroud) is the characteristics of CDMA access technology, therefore method and apparatus described herein also can be applied to other technical based on CDMA equivalently, such as cdma2000.Can also in mark (fraction) high speed downlink packet access access (F-HSDPA), implement the method.
In cdma system, inner-loop power control (being also referred to as fast power control) moves in each time slot, and each time slot is typically less than 1ms (for example being 0.67ms in WCDMA).In WCDMA, inner-loop power control moves in up link and down link simultaneously.Quick inner-loop power control is located specific signal with the transmitted power of transmit leg to the recipient interference and noise ratio (SIR) target is adjusted.The purpose of up link and downlink inner loop power control is to offset the fast-fading effect, keeps simultaneously required sir target.In up link, this inner-loop power control is also guaranteed closely-far compensation of (near-far) problem, so that the signal that the user of distant place receives from the residential quarter is not flooded by stronger signal.In each time slot, subscriber equipment is estimated the SIR of certain known reference or frequency pilot sign, and with its with and corresponding certain sir target of given service (for example, specific bit error rate (BER) spreading factor of requiring, using etc.) compare.In WCDMA, measure down link SIR at Dedicated Physical Control Channel (DPCCH), this Dedicated Physical Control Channel comprises for the pilot tone of up-link power control and transmitter power control (TPC) order.If the SIR that estimates is less than sir target, then subscriber equipment generates the UP order, otherwise it generates the DOWN order; As response, the base station will increase (in the situation of UP) or reduce (in the situation of DOWN) its down link transmitted power.
The purpose of exterior ring power control is to adjust the as explained before sir target value of inner-loop power control use, keeps simultaneously specific link-quality.This quality objective is final quality objective tolerance, and this tolerance is set by network, and the subscriber equipment expectation keeps this target all the time, thereby guarantees to satisfy required service quality in whole call session process.Because the radio link conditions that changes (such as user mobility, quick decline etc.), the mapping between sir target and the BER changed along with the time.Because need to be to the constant adjustment of sir target keeping required BER value, so this be key point.This mechanism of adjusting sir target also is known as exterior ring power control, quality control or outer shroud scheme.
In the system such as the WCDMA of enhanced uplink (EUL) version, the configuration exterior ring power is controlled the quality objective of attempting number based on sending to satisfy, that is: " after x target transmission, residual error should be y% ".
Up link DPCCH sir target is adjusted in the uplink outer loop power control that is used for enhanced uplink channel, so satisfy the residual error rate after the maximum of regulation sends number.
If after the maximum of regulation sends number, successfully this transmission is not decoded, then increases for example 0.5dB of sir target.The transmission of decoding for each time success reduces the factor that is inversely proportional to error probability with corresponding sir target, if for example error rate is 2%, then approximately reduces 0.01dB.
Send by aerial (over the air) data of using a plurality of different physical channels (for example Dedicated Physical Control Channel (DPCCH), Dedicated Physical Data Channel (DPDCH), enhancing Dedicated Physical Control Channel (E-DPCCH) and enhancing Dedicated Physical Data Channel (E-DPDCH)) to carry out in wireless communication system.The power consumption of these channels is relative to each other by power offset (namely with respect to DPCCH power stage other β value or gain factor).
Yet the gain factor that uses in real data sends may be inaccurate, and this will affect whole systematic function.May cause inaccurate gain factor by the reference gain factors of simulating acquisition or the method for calculating other gain factor.For example, take when gain factor is lower than institute, require more the transmission to attempt to guarantee successful transmission.Because the control of current EUL exterior ring power is based on to send and attempts, this come down to increase sir target and with more power division to DPCCH.Yet this does not wish.
When the number of send attempting during greater than the TA target, increase the DPCCH sir target according to the current exterior ring power control of EUL WCDMA.This means that all have the transmitted power that also will increase them with respect to other channel (such as E-DPDCH) of the power offset of DPCCH.
Yet in a lot of situations, the reason that does not satisfy the TA target is owing to the mistake low-power on data channel (E-DPDCH), rather than because the mistake low-power on control channel DPCCH.
Send more off and on simultaneously E-DPDCH owing to send continuously DPCCH, the sir target and the power that increase on the DPCCH will cause unnecessary high interference.
In addition, in the situation that high power uses on the coverage of bad luck and subscriber equipment, DPCCH will " steal " power from data channel E-DPDCH.
In addition, the firm power side-play amount for different transmission block sizes also has problems.Network is difficult to arrange power offset and strengthens data channel transmission format combination (E-TFC) accurately to mate the TA target.For example, if power offset is crossed low and can not be satisfied the TA target, will increase DPCCH SIR until satisfy the TA target.Since be difficult to know in advance what power offset can with required TA object matching, so this will probably cause the undesired adjustment to the DPCCH sir target, thereby and cause undesired interference to increase or too low DPCCHSIR target.
Summary of the invention
The objective of the invention is to avoid or at least some above-mentioned shortcomings that minimizing is associated with prior art.
Target of the present invention provides the mechanism in a kind of node, and this mechanism reduces power consumption and raising capacity in wireless communication system.
This target is to be realized for generating the method for adjusting order at sending node by a kind of.The transmitted power of the radio signal that is sent to receiving node is adjusted in this adjustment order.Send radio signal at least the first channel and second channel.Carry out described adjustment by adjusting gain factor.Relation between the first transmit power level of this gain factor and the first channel and the second transmit power level of second channel is associated.Described method also comprises the first mass value that acquisition is associated with described the first channel.In addition, described method comprise definite the first mass value that obtains and with the first quality target value that described the first channel is associated between poor.In addition, described method comprises based on the determined difference between the mass value that obtains and the described quality target value and adjusts described gain factor.Similarly, described method comprises based on the gain factor of adjusting and generates adjustment order for the transmitted power of adjusting the first channel.
This target is also realized for generating the method for adjusting order at receiving node by a kind of.Described adjustment order is adjusted from the transmitted power of the radio signal of sending node reception.Send this radio signal at least the first channel and second channel.Carry out described adjustment by adjusting gain factor.Relation between the first transmit power level of this gain factor and the first channel and the second transmit power level of second channel is associated.This first channel and second channel are used for from described sending node to described receiving node transmitted signal.Described method comprises the first mass value that acquisition is associated with described the first channel.In addition, described method comprise definite the first mass value that obtains and with the first quality target value that described the first channel is associated between poor.In addition, described method comprises based on the determined difference between the mass value that obtains and the described quality target value and adjusts described gain factor.In addition, described method comprises based on the gain factor of adjusting and generates adjustment order be used to the described transmitted power of adjusting described the first channel.
This target also realizes by being used for generating the device of adjusting order in a kind of sending node.Generate this adjustment order to be used for adjusting the transmitted power of the radio signal that is sent to receiving node.Send this radio signal at least the first channel and second channel.Carry out described adjustment by adjusting gain factor.Relation between the first transmit power level of this gain factor and the first channel and the second transmit power level of second channel is associated.This first channel and second channel are used for transmitted signal between described sending node and receiving node.Described device comprises the acquisition unit that is applicable to obtain the first mass value of being associated with described the first channel.In addition, this device comprise be applicable to determine the first mass value of obtaining and with the first quality target value that described the first channel is associated between the determining unit of difference.In addition, this device comprises the adjustment unit that is applicable to adjust based on the determined difference between the mass value that obtains and the described quality target value described gain factor.In addition, this device also comprises and is applicable to generate generation unit be used to the adjustment order of the described transmitted power of adjusting described the first channel based on the gain factor of adjusting.
This target also realizes by being used for generating the device of adjusting order in a kind of receiving node.This is adjusted order and adjusts from the transmitted power of the radio signal of sending node transmission.Send this radio signal at least the first channel and second channel.Carry out described adjustment by adjusting gain factor.Relation between the first transmit power level of this gain factor and the first channel and the second transmit power level of second channel is associated.This first channel and second channel are used for from described sending node to described receiving node transmitted signal.Described device comprises that first obtains the unit.First obtains the unit is applicable to obtain the first mass value of being associated with described the first channel.In addition, described device comprises determining unit, be applicable to determine the first mass value of obtaining and with the first quality target value that described the first channel is associated between poor.In addition, described device comprises adjustment unit, is applicable to adjust described gain factor based on the determined difference between the mass value that obtains and the described quality target value.In addition, described device comprises the maker unit, is applicable to generate adjustment order be used to the described transmitted power of adjusting described the first channel based on the gain factor of adjusting.
By method and apparatus of the present invention, owing to by adjusting the quality that guarantees data channel with the incoherent gain factor cause data channel of control channel itself, utilized the transmitted power of node in more efficient mode.Can avoid following situation: bad data channel quality causes sir target to increase, so since control channel take more power and may cause even the worse data channel.
Thereby the advantage of this method and device is to have realized the power adjustment of the improvement of radio signal, and it has saved energy resource.
Description of drawings
To the present invention be described in more detail by accompanying drawing now, wherein:
Fig. 1 shows the embodiment of cordless communication network.
Fig. 2 shows the block diagram of signaling.
Fig. 3 shows the flow chart of the embodiment of method step.
Fig. 4 shows the flow chart of the embodiment of method step.
Fig. 5 shows the block diagram of the embodiment that installs in the node.
Fig. 6 shows the block diagram of the embodiment that installs in the node.
Embodiment
The present invention is defined as the method and apparatus that to realize in the following embodiments.
Fig. 1 shows the sending node 110 that communicates with receiving node 120 in the residential quarter 130 of wireless communication system 100.
In certain embodiments, sending node 110 can be subscriber equipment, such as mobile honeycomb radio telephone, personal digital assistant (PDA), laptop computer, computer or be applicable to any similar device of radio communication.Receiving node 120 can be base station, wireless communications station, fixed station, control station, repeater or the equipment that is used for any other type of the similar device of radio communication or the Radio Resource of can communicating by letter.
Yet, situation also can be opposite, such as in some other embodiment, sending node 110 can be the equipment of base station, wireless communications station, fixed station, control station, repeater or the similar device that is used for radio communication or any other type that can the communication radio resource, and receiving node 120 can be subscriber equipment, such as mobile honeycomb radio telephone, personal digital assistant (PDA), laptop computer, computer or be used for any similar device of radio communication.
On radio link, receive from sending node 110 transmission radio signals and by receiving node 120.Can be adjusted by receiving node 120 power (this power may be too high or cross the low communication that is not suitable for) of this signal by for example moving inner-loop power control (be also referred to as fast power control).Inner-loop power control can operate in simultaneously from sending node 110 and be sent on the signal of receiving node 120, for example as uplink signal or down link signal.The purpose of up link and downlink inner loop power control is to offset quick attenuating effect in addition, keeps simultaneously required sir target.Its also guarantee to closely-compensation of problem far away so that from the residential quarter away from the signal that receives of user do not flooded by stronger signal.
Receiving node 120 can estimate the sir value of certain known reference signal (such as frequency pilot sign) and it is compared with certain sir target, and this sir target and given quality of service goals (require such as specific BLER/BER etc.) are corresponding.
In WCDMA for example, can measure SIR at Dedicated Physical Control Channel (DPCCH), this DPCCH comprises for the pilot tone of up-link power control and TPC order.If the SIR that measures is less than sir target, then the inner-loop power control at receiving node 120 places can generate the UP order and send it to sending node 110, if and the SIR that measures is greater than sir target, then the inner-loop power control at receiving node 120 places can generate the DOWN order and send it to sending node 110.As response, sending node 110 will increase (in the situation of UP order) or reduce (in the situation of DOWN order) its down link transmitted power.
Use exterior ring power to control to satisfy required quality of service goals by receiving node 120.Can implement in the base station that exterior ring power controls to satisfy the uplink quality target and in subscriber equipment, implement exterior ring power and control to satisfy the downlink quality target.Importantly, no matter the radio condition (this is common situation in wireless communication system 100) that changes, outer shroud can be kept required quality of service goals.
Exterior ring power control can be used for keeping the particular link quality.Can quality objective be set by network 100, and sending node 110 expectation keeps this target all the time, thereby guarantee during whole call session, to satisfy the required service quality.Quality target value can depend on the type of service, and such as voice, grouped data, video data etc., they and then impact are used for the sir target of inner-loop power control.Thereby, during the radio signal condition of normal signal, easily realize the sufficient power rank for the quality objective that radio link is provided.
Fig. 2 shows according to the block diagram of some embodiments of the present invention in the signaling between sending node 110 and receiving node 120 at two different constantly t=1 and t=2 place.Can carry out this signaling at a plurality of channels, such as the first channel 230 and second channel 240.The first channel 230 can be data channel, such as E-DPDCH.Second channel 240 can be control channel, such as DPCCH.Undertaken on for example the first channel 230 and second channel 240, be sent to other adjustment of transmit power level of the signal of receiving node 120 from sending node 110 by adjusting gain factor 200.Gain factor 200 is poor between channel 230,240 the transmitted power, poor such as between the first channel 230 and the second channel 240.
Shown in scene in, than the gain factor 200 at t=1 place, the gain factor 200 at the t=2 place has increased.Thereby, the corresponding transmitted power that has increased at first channel 230 at time t=2 place.
Can carry out the adjustment of gain factor 200 by receiving node 120, but also can in sending node 110, carry out the adjustment of gain factor 200.
As shown in Figure 2, advantage of the present invention is to adjust the transmitted power of the first channel 230 by adjusting gain factor 200, and does not adjust simultaneously the transmit power level of second channel 240.
Fig. 3 shows the flow chart that is used for generating the method for adjusting order in sending node 110.Generate and adjust order to be used for adjusting the transmitted power of the radio signal that is sent to receiving node 120.On at least the first channel 230 and second channel 240, send radio signal to receiving node 120.The first channel 230 can be data channel, such as E-DPDCH.Second channel 240 can be control channel, such as DPCCH.In addition, carry out this adjustment by adjusting gain factor 200.Relation between the first transmit power level of gain factor 200 and the first channel 230 and the second transmit power level of second channel 240 is associated.This signal can comprise the data that send with the particular transport block size.The transmission block size can change according to different pieces of information.Similarly, according to some embodiment, the transmission block size can affect gain factor 200, so that different gain factors 200 can be used for different transformats.According to some embodiment, can only adjust gain factor 200 for the transmission block of the transmission block size of using before having.
In order to generate rightly the adjustment order that is used for sending node 110, this method can comprise a plurality of step 301-304.Yet, should be noted in the discussion above that some described method steps are optionally and only included by some embodiment.In addition, it should be noted that, can come manner of execution step 301-304 with order before and after the random time, and can carry out simultaneously or with change or even the antipodal time before and after order carry out among them some (for example step 301 and steps 303) or even institute in steps.The method comprises the following steps:
The first mass value that sending node 110 acquisitions are associated with the first channel 230.According to some embodiment, carry out this step by receiving from one or more affirmations (ACK) or the non-affirmation (NACK) of receiving node 120 transmissions, correctly or mistakenly received this signal before this affirmation or non-affirmation are indicated respectively.These one or more affirmations (ACK) or non-affirmation (NACK) may relate to a plurality of signals of representative data or data block.
Can be from receiving node 120 confirmations of receipt (ACK) and/or non-affirmation (NACK).
Sending node 110 determine the first mass values of obtaining and with the first quality target value that the first channel 230 is associated between poor.According to some embodiment, this step comprises poor between the number of the affirmation (ACK) that determine to receive and the threshold value.This threshold value can have arbitrary size, such as being an affirmation.
According to some embodiment, this step comprises poor between the number of the non-affirmation (NACK) that determine to receive and the threshold value.This threshold value can have arbitrary size, such as being a non-affirmation.
Yet, according to some embodiment, can in optional step 302, carry out survey.For these embodiment, can represent this threshold value with speed, for example receive three non-affirmations (NACK) second.
Sending node 110 is adjusted gain factor 200 based on the difference of determining between the mass value that obtains and the quality target value.
According to some embodiment, if sending node 110 receives the confirmation (ACK) from receiving node 120 then can reduce gain factor 200, this affirmation indication has correctly received the signal that sends before that is sent to receiving node 120 from sending node 110.
According to some embodiment, if sending node 110 receives non-affirmation (NACK) from receiving node 120 then can increase gain factor 200, this non-affirmation indication has received the signal that sends before that is sent to receiving node 120 from sending node 110 mistakenly.
According to some embodiment, gain factor 200 is based on the calculating number of affirmation (ACK) that specific predetermined time period receives and/or non-affirmation (NACK) and the difference of determining between the threshold limit value.According to these embodiment, can this limit be set to for example receive in one second three non-affirmations (NACK).If overstep the extreme limit, then can increase gain factor 200.Thereby according to some embodiment, sending node 110 can compile the statistics of ACK and NACK, then based on N
Nack/ (N
Ack+ N
Nack) adjust gain factor 200, wherein N
AckThe number of the ACK that in specific Measuring Time section, sends, simultaneously N
NackIt is the number of the NACK that in this Measuring Time section, sends.
According to some embodiment, can reduce gain factor 200 (Δ β) with the less step-length of step-length of using when increasing gain factor 200.
Thereby as non-limitative example, can step-length be set to according to some embodiment:
When increasing gain factor 200, Δ β=1, and
When reducing gain factor 200,
By some embodiment, by the adjustment to gain factor 200 (it is not directly related with second channel 240 or control channel (such as DPCCH)), itself guarantee the quality of the first channel 230 (perhaps data channel) by the first channel 230, utilized the transmitted power of sending node 110 in more efficient mode.This will be avoided following situation: the data of the bad luck that causes owing to bad the first channel 230 quality send and will cause sir target to increase, because second channel 240 can take more power, this can and then cause the worse propagation conditions of the first channel 230.
Fig. 4 shows the flow chart that is used for generating the method for adjusting order in receiving node 120.Generate this adjustment order to be used for adjusting the transmitted power of radio signal.On at least the first channel 230 and second channel 240, receive radio signals from sending node 110.Carry out this adjustment by adjusting gain factor 200.Relation between the first transmit power level of gain factor 200 and the first channel 230 and the second transmit power level of second channel 240 is associated.The first channel 230 and second channel 240 are used for from sending node 110 to receiving node 120 transmitted signals.
This signal can comprise the data that send with the particular transport block size.This transmission block size can change for different data.In addition, according to some embodiment, this transmission block size can affect gain factor 200.
In order to generate rightly the adjustment order that is used for sending node 110, the method can comprise a plurality of step 401-408.Yet, should be noted in the discussion above that some described method steps are optionally and only included by some embodiment.In addition, it should be noted that, can come manner of execution step 401-408 with order before and after the random time, and can carry out simultaneously or with change or even the antipodal time before and after order carry out among them some (for example step 401 and steps 406) or even institute in steps.The method comprises the following steps:
The first mass value that receiving node 120 acquisitions are associated with the first channel 230.The first mass value can be based on any error rate numerical procedure, such as frame error ratio (FER), block error rate (BLER), bit error rate (BER), perhaps based on any tolerance that other is fit to, such as outage probability (outage probability).Thereby the quality objective of using according to some embodiment can be based on bit, piece or frame error ratio, for example wherein uses cyclic redundancy check (CRC) (CRC) to measure bit, piece or frame error ratio.Yet in certain embodiments, quality objective can also be ordered mistake based on TPC, and can measure corresponding downlink quality in the TPC order that receives.
In certain embodiments, can be by carrying out the estimation of the mass value of the first channel 230 is carried out the step of the mass value that obtains the first channel 230.According to some embodiment, can also carry out this step by the mass value that receives the first channel 230 from another node.
According to some embodiment, receiving node 120 can use N
Err/ (N
Corr+ N
Err) measure block error rate, wherein N
CorrThe number at particular measurement correct transmission block that receives in the time period, and N
ErrIt is the number of the wrong transmission block that receives in this Measuring Time section.
Receiving node 120 determine the first mass values of obtaining and with the first quality target value that the first channel 230 is associated between poor.
Can determine that this is poor by the first mass value of the relatively acquisition of the first channel 230 and the quality target value of the first channel 230.According to some embodiment, service has different value to the quality target value of this first channel 230 for difference.The value of this quality target value can depend on the type of service, and as mentioned above, the type further affects the sir target that is used for inner-loop power control.As non-limitative example, the 1%BLER target can be used for voice, and the 10%BLER target can be used for grouped data, and 0.1%BLER can be used for visual telephone etc.
In optional step 403, according to some embodiment, the number that the transmission to receiving node 120 transmitted signals that receiving node 120 definite sending nodes 110 have carried out is attempted.According to some embodiment, can be by count to carry out the optional step of the number of the transmission trial that obtains secondary signal on the first channel 230 to sending the number of attempting.According to some embodiment, another node that can also comprise from cordless communication network 100 receives and sends the number of attempting.
Step 404 is optional.According to some embodiment, can compare with transmission trial threshold value sending the number of attempting.According to some embodiment, send attempting threshold value can have different value for the data block that difference sends block size.
According to some embodiment, sending the trial threshold value can have different value for the difference service.
In optional step 405, according to some embodiment, receiving node 120 calculates whether correctly receive the signal that sends from sending node 110 on the first channel 230.Can estimate by arbitrary data correctness algorithm (such as CRC) correctness of this signal.
Step 406 is optional.According to some embodiment, the second mass value that receiving node 120 acquisitions are associated with second channel 240.According to some embodiment, the second mass value that is associated with second channel 240 can be sir value.According to some embodiment, can estimate this sir value by receiving node 120.
Step 407 is optional.According to some embodiment, receiving node 120 detect the second mass value of obtaining and with quality target value that second channel is associated between poor.According to some embodiment, the second mass value can be sir value, and quality target value can be the sir target value.
Receiving node 120 is adjusted gain factor 200 based on the determined difference that obtains between mass value and the quality target value.
According to some embodiment, if for example the second mass value (such as sir value) surpasses threshold value (such as the sir target value), then gain factor 200 can be reduced specific step-length, if and in number is attempted in the transmission that allows, correctly received the signal that comprises transmission data block, then gain factor 200 could be reduced specific step-length.According to some embodiment, this step-length can be 1/ (1-BLER).Otherwise, can increase gain factor 200.According to some embodiment, gain factor 200 can be increased step-length 1.
According to some embodiment, can reduce gain factor 200 (Δ β) with the less step-length of step-length of using when increasing gain factor 200.
Thereby as non-limitative example, can step-length be set to according to some embodiment:
When increasing gain factor 200, Δ β=1, and
When reducing gain factor 200,
By some embodiment, by the adjustment to gain factor 200 (it is not directly related with second channel 240 or control channel (such as DPCCH)), itself guarantee the quality of the first channel 230 (perhaps data channel) by the first channel 230, utilized the transmitted power of sending node 110 in more efficient mode.Thereby can avoid following situation: the data of the bad luck that causes owing to bad the first channel 230 quality send and will cause sir target to increase, because second channel 240 can take more power, this can and then cause the worse propagation conditions of the first channel 230.
Fig. 5 shows the block diagram of the embodiment of the device 500 in the sending node 110.For manner of execution step 301-304 in sending node 110, adjust order to generate, this adjustment order is used for being adjusted on the radio link transmitted power of the radio signal that sends to receiving node 120, and sending node 110 comprises device 500 as shown in Figure 5.
Sending node device 500 is applicable to generate the adjustment order for the transmitted power of adjusting radio signal.On at least the first channel 230 and second channel 240, send radio signal to receiving node 120.Radio signal can be included in the data of different big or small transmission blocks.In addition, carry out this adjustment by adjusting gain factor 200.Relation between the first transmit power level of gain factor 200 and the first channel 230 and the second transmit power level of second channel 240 is associated.The first channel 230 and second channel 240 are used for transmitted signal between sending node 110 and receiving node 120.
Sending node device 500 comprises the acquisition unit 501 that is applicable to obtain the first mass value of being associated with the first channel 230.
According to some embodiment, sending node device 500 can comprise unit calculator 502.This optional unit calculator 502 goes for calculating the affirmation (ACK) that receives and/or the number of non-affirmation (NACK) during the specific time period.This time period can be scheduled to.
In addition, sending node device 500 comprises determining unit 503.Determining unit 503 be applicable to the first mass value of determine obtaining and with the first quality target value that the first channel 230 is associated between poor.
Sending node device 500 also comprises adjustment unit 504.This adjustment unit 504 is applicable to adjust gain factor 200 based on the mass value that obtains and the determined difference between the quality target value.
According to some embodiment, sending node device 500 can also comprise processor unit 506.This processor unit 506 is applicable to deal with data, carries out and calculate and communicate with other unit that comprises in sending node device 500.
According to some embodiment, can in identical physical location, comprise arbitrarily, some or whole unit 501,502,503,504 and/or 506.Thereby unit 501,502,503,504 and/or 506 can be considered as providing the entity of specific appointed function, and not necessarily separated physical location is included.
Fig. 6 shows the block diagram of the embodiment of device 600 in the receiving node 120.For manner of execution step 401-408 in receiving node 120, order to be used for generating adjusting, this adjustment order is used for being adjusted on the radio link transmitted power of the radio signal that sends from sending node 110, and receiving node 120 comprises device 600 as shown in Figure 6.
Receiving node device 600 comprises that being applicable to obtain first of the first mass value of being associated with the first channel 230 obtains unit 601.
In addition, receiving node device 600 comprise be applicable to the first mass value of determine obtaining and with the first quality target value that the first channel 230 is associated between the determining unit 602 of difference.
In addition, according to some embodiment, receiving node device 600 can comprise that the 3rd obtains unit 603.The 3rd obtains unit 603 can also be applicable to obtain the number that the transmission to receiving node 120 transmitted signals that sending node 110 carried out is attempted.
Similarly, according to some embodiment, receiving node device 600 can comprise comparing unit 604, and the number that the transmission that comparing unit 604 is applicable to obtain is attempted is attempted threshold value with transmission and compared.
According to some embodiment, receiving node device 600 can comprise computing unit 605, and computing unit 605 is applicable to calculate whether correctly receive the data that send from sending node 110 on the first channel 230.
According to some embodiment, receiving node device 600 comprises that also second obtains unit 606, the second and obtain unit 606 and be applicable to obtain the second mass value of being associated with second channel 240.
According to some embodiment, receiving node device 600 comprises detecting unit 607.Optional detecting unit 607 go for detecting acquisition the second mass value and with quality target value that second channel 240 is associated between poor.
Similarly, receiving node device 600 comprises adjustment unit 608, and adjustment unit 608 is applicable to adjust gain factor 200 based on the mass value that obtains and the determined difference between the quality target value.
Similarly, according to some optional embodiment, receiving node device 600 comprises transmitting element 609, and transmitting element 609 is applicable to transmit to another node.
According to some embodiment, can in identical physical location, comprise arbitrarily, some or whole unit 601,602,603,604,605,606,607,608 and/or 609.Thereby unit 601,602,603,604,605,606,607,608 and/or 609 can be considered as providing the entity of specific appointed function, and not necessarily separated physical location is included.
Because method and apparatus of the present invention has been realized mechanism fast and accurately that the transmit power level on a plurality of channels 230,240 is adjusted by adjusting gain factor 200, method and apparatus of the present invention can be particularly advantageous for for example enhanced uplink (EUL) or High Speed Uplink Packet access (HSUPA) technology in the wireless communication system 100.
Up-link power control and only with it as an example in the receiving node 120 mainly is absorbed in the description of the method and apparatus that embodies.Yet, for example when sending node 110 just carries out soft handover, can also in base station controller or radio network controller (RNC), partly carry out method and apparatus of the present invention.
As an example and in order to simplify understanding, when describing signal to the Noise and Interference ratio, as one man use in this article term SIR in addition, this ratio is the ratio between the rank of desired signal rank and background noise and signal disturbance.Ratio is higher, and background noise is more not outstanding.Yet, exist other to be used to describe the abbreviation of identical or similar ratio, such as signal to noise ratio (SNR or S/N), signal to Noise and Interference ratio (SNIR), carrier wave to interference ratio (CIR), signal to disturbing and the inverse of noise ratio (SINR) or these ratios, such as jamming effectiveness (ISR).In the context of this description, can use any these or similar ratio except SIR.
According to some embodiment, can implement method be used to the transmitted power that is adjusted on the first channel 230 and the second channel 240 radio signal that sends from sending node 110 by one or more processors and the computer program code that is used for the function of manner of execution, such as the processor 506 in sending node device 500 as shown in Figure 5, the perhaps processor 608 in receiving node device 600 shown in Figure 6.The said procedure code can also be provided as computer program, for example provide with following form: carrying is used for the data medium of the computer program code of executive basis method of the present invention when being loaded on sending node 110 and/or receiving node 120.This data medium can be CD ROM dish, memory stick or any other medium, such as the dish that can preserve machine-readable data or band.This computer program code can also be provided as the pure program code on the server, and can be with its remote download to sending node 110 and/or receiving node 120.
Although the method and apparatus of describing in this document can carry out that difference is revised and the form replacement, show as an example in the accompanying drawings its specific embodiment and be described in detail.Yet be to be understood that, and be not intended to method and apparatus of the present invention is limited in particular forms disclosed, but on the contrary, the method and device will be contained all modifications, equivalent and the alternative of the spirit and scope that fall into the method and apparatus that is defined by claim.
In the description of accompanying drawing, the similar similar unit of reference number indication.
As used herein, unless specifically stated otherwise, singulative also comprise plural form.It should also be understood that, when using in this manual, term " comprises " existence that is used for indicating institute's stated features, integer, step, operation, unit and/or assembly, but does not get rid of existence or the interpolation of one or more further features, integer, step, operation, unit, assembly and/or their group.Should be appreciated that when the unit is called " to be connected " with another unit or when " coupling " that this unit can be directly to be connected with another unit or to be coupled, and perhaps can have unit between two parties.
In addition, this paper employed " connection " or " coupling " can comprise wireless connections or coupling.As used herein, term " and/or " comprise the one or more listed clauses and subclauses that are associated arbitrarily and all combinations.
Unless otherwise defined, all terms that comprise technology used herein and scientific terminology have the same meaning of usually understanding with these method and apparatus those skilled in the art.It should also be understood that, term (such as those terms that defines) should be interpreted as having the meaning consistent with its meaning in the context of correlative technology field in common dictionary, unless and in this article clearly definition, otherwise their idealized ground or excessive letter ground should not explained.
For the needs that illustrate, the embodiment of method and apparatus of the present invention has been described in the context of subscriber equipment and base station.Yet should be appreciated that method and apparatus of the present invention is not limited to these embodiment, and they usually can be presented as any electronic equipment that comprises Radio Signal Propagation equipment.
Claims (11)
1. be used for generating the method for adjusting order in the sending node (110), be used for being adjusted at the transmitted power that is sent to the radio signal of receiving node (120) at least data channel (230) and control channel (240), carry out described adjustment by adjusting gain factor (200), relation between the first transmit power level of this gain factor (200) and described data channel (230) and the second transmit power level of described control channel (240) is associated, and described method comprises the following steps:
Obtain the first mass value that (301) are associated with described data channel (230) by receiving the one or more affirmations (ACK) or the non-affirmation (NACK) that send from described receiving node (120), before indicating respectively, described affirmation (ACK) and non-affirmation (NACK) correctly or mistakenly received described signal
Determine the first mass value that (303) obtain and with the first quality target value that described data channel (230) is associated between poor,
Adjust (304) described gain factor (200) based on the determined difference between the first mass value that obtains and described the first quality target value.
2. method according to claim 1, wherein, if described sending node (110) receives the confirmation (ACK) from described receiving node (120) then reduces described gain factor, this affirmation indication has correctly received the signal that sends before that is sent to described receiving node (120) from described sending node (110).
3. the described method of any one according to claim 1-2, wherein, if described sending node (110) receives non-affirmation (NACK) from described receiving node (120) then increases described gain factor, this non-affirmation indication has received the signal that sends before that is sent to described receiving node (120) from described sending node (110) mistakenly.
4. the described method of any one also comprises the following steps: according to claim 1-2
The affirmation (ACK) that calculating (302) receives during specific predetermined amount of time and/or the number of non-affirmation (NACK), wherein, determined poor based between the calculating number of the affirmation (ACK) that receives during the specific predetermined amount of time and/or non-affirmation (NACK) and threshold limit value of the step of adjusting (304) described gain factor (200).
5. the described method of any one according to claim 1-2, wherein, for the difference service, described the first quality target value is set to the different value rank.
6. the described method of any one according to claim 1-2 wherein, is adjusted described gain factor (200) according to the transmission block size.
7. the described method of any one according to claim 1-2 wherein, is only adjusted described gain factor (200) for the transmission block of the transmission block size of using before having.
8. the described method of any one according to claim 1-2 wherein, represents described sending node (110) by the base station.
9. the described method of any one according to claim 1-2 wherein, represents described sending node (110) by subscriber equipment.
10. be used for generating the device (500) of adjusting order in the sending node (110), be used for being adjusted at the transmitted power that is sent to the radio signal of receiving node (120) at least data channel (230) and control channel (240), carry out described adjustment by adjusting gain factor (200), relation between the first transmit power level of this gain factor (200) and described data channel (230) and the second transmit power level of described control channel (240) is associated, this data channel (230) and control channel (240) are used for transmitted signal between described sending node (110) and receiving node (120), and described device (500) comprising:
Obtain unit (501), be applicable to obtain the first mass value of being associated with described data channel (230) by receiving the one or more affirmations (ACK) that send from described receiving node (120) or non-affirmation (NACK), before indicating respectively, described affirmation (ACK) and non-affirmation (NACK) correctly or mistakenly received described signal
Determining unit (503), be applicable to determine the first mass value of obtaining and with the first quality target value that described data channel (230) is associated between poor,
Adjustment unit (504) is applicable to adjust described gain factor (200) based on the determined difference between the first mass value that obtains and described the first quality target value.
11. device according to claim 10 (500) also comprises:
Unit calculator (502) is applicable to calculate affirmation (ACK) that (302) receive and/or the number of non-affirmation (NACK) during specific predetermined amount of time.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SE2007/051005 WO2009078762A1 (en) | 2007-12-14 | 2007-12-14 | Method and arrangement for adjusting transmission power by- adjusting a gain factor in a communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101897129A CN101897129A (en) | 2010-11-24 |
| CN101897129B true CN101897129B (en) | 2013-03-13 |
Family
ID=40795740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007801018937A Active CN101897129B (en) | 2007-12-14 | 2007-12-14 | Method and arrangement for adjusting transmission power by-adjusting a gain factor in a communication system |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8422962B2 (en) |
| EP (1) | EP2220780A4 (en) |
| CN (1) | CN101897129B (en) |
| WO (1) | WO2009078762A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685867B (en) * | 2003-09-26 | 2016-06-29 | 美商内数位科技公司 | For the method for wireless transmitter/receiver unit WTRU, IC and WTRU |
| US8437315B2 (en) * | 2007-08-01 | 2013-05-07 | Broadcom Corporation | Firmware processing for downlink F-DPCH |
| CN102448103B (en) | 2010-10-11 | 2014-07-02 | 中兴通讯股份有限公司 | Method and device for intelligently improving wireless radio frequency index in distributed network in real time |
| EP2456267A1 (en) * | 2010-11-19 | 2012-05-23 | Mitsubishi Electric R&D Centre Europe B.V. | Method for adjusting the transmission power of the signals transferred by at least one home base station |
| TW201240505A (en) * | 2011-03-23 | 2012-10-01 | Acer Inc | Power management method for use in a wireless network system |
| US9185660B2 (en) * | 2011-04-21 | 2015-11-10 | Mediatek Inc. | Power adaptation apparatus and power adaptation method for controlling uplink/downlink power |
| GB2479076C (en) * | 2011-05-03 | 2014-08-13 | Broadcom Corp | Uplink transmission power control mechanism |
| WO2013067430A1 (en) * | 2011-11-04 | 2013-05-10 | Interdigital Patent Holdings Inc. | Method and apparatus for power control for wireless transmissions on multiple component carriers associated with multiple timing advances |
| CN103427931B (en) * | 2012-05-14 | 2017-06-06 | 华为技术有限公司 | The method and apparatus of demodulating data |
| US9374191B2 (en) * | 2012-05-17 | 2016-06-21 | Apple Inc. | Outer loop link adaptation for device resumption |
| CN110958708B (en) * | 2018-09-26 | 2022-02-08 | 维沃移动通信有限公司 | Signal transmission method, user equipment and network equipment |
| CN111107618A (en) * | 2018-10-29 | 2020-05-05 | 华为技术有限公司 | Power control method and terminal equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001024402A1 (en) * | 1999-09-30 | 2001-04-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Transmit power control |
| GB2408420A (en) * | 2003-11-21 | 2005-05-25 | Motorola Inc | Determining a power relationship linking the transmit powers of user data and associated control data |
| WO2007097960A1 (en) * | 2006-02-17 | 2007-08-30 | Lucent Technologies Inc. | Methods of reverse link power control |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3440076B2 (en) * | 2000-11-29 | 2003-08-25 | 松下電器産業株式会社 | Wireless infrastructure equipment |
| WO2003085878A1 (en) * | 2002-04-10 | 2003-10-16 | Koninklijke Philips Electronics N.V. | Communication system using arq |
| KR100987204B1 (en) | 2002-08-23 | 2010-10-12 | 콸콤 인코포레이티드 | Method and system for a data transmission in a communication system |
| AU2002368322A1 (en) * | 2002-11-05 | 2004-06-07 | Nokia Corporation | Method, device and system for determining a transmission power for arq related re-transmissions |
| WO2004080006A2 (en) * | 2003-03-06 | 2004-09-16 | Nortel Networks Limited | Reverse link enhancement for cdma 2000 release d |
| US7738901B2 (en) * | 2003-07-10 | 2010-06-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Secondary link power control in a wireless communication network |
| FI20045297A0 (en) * | 2004-08-16 | 2004-08-16 | Nokia Corp | Radio resource control of HSUPA system |
| KR100702643B1 (en) * | 2005-03-01 | 2007-04-02 | 가부시키가이샤 엔.티.티.도코모 | Transmission power control method, mobile station, and radio network controller |
| EP1868303A1 (en) * | 2005-03-18 | 2007-12-19 | NTT DoCoMo Inc. | Transmission power control method, mobile station, radio base station, and radio line control station |
| US8160029B2 (en) * | 2006-12-19 | 2012-04-17 | Alcatel Lucent | Methods for power reduction detection for enhanced dedicated channel |
-
2007
- 2007-12-14 WO PCT/SE2007/051005 patent/WO2009078762A1/en active Application Filing
- 2007-12-14 EP EP07852276.0A patent/EP2220780A4/en not_active Withdrawn
- 2007-12-14 CN CN2007801018937A patent/CN101897129B/en active Active
- 2007-12-14 US US12/747,614 patent/US8422962B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001024402A1 (en) * | 1999-09-30 | 2001-04-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Transmit power control |
| GB2408420A (en) * | 2003-11-21 | 2005-05-25 | Motorola Inc | Determining a power relationship linking the transmit powers of user data and associated control data |
| WO2007097960A1 (en) * | 2006-02-17 | 2007-08-30 | Lucent Technologies Inc. | Methods of reverse link power control |
Non-Patent Citations (4)
| Title |
|---|
| 3GPP.Physical layer procedures (FDD).《3GPP TS 25.214 V8.0.0》.2007,第5.1.2节. |
| 3GPP.Spreading and modulation (FDD).《3GPP TS 25.213 V7.4.0》.2007,第4.2.1.2节. |
| Physical layer procedures (FDD);3GPP;《3GPP TS 25.214 V8.0.0》;20071130;第5.1.2节 * |
| Spreading and modulation (FDD);3GPP;《3GPP TS 25.213 V7.4.0》;20071130;第4.2.1.2节 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2220780A4 (en) | 2014-07-23 |
| US20110003561A1 (en) | 2011-01-06 |
| EP2220780A1 (en) | 2010-08-25 |
| CN101897129A (en) | 2010-11-24 |
| WO2009078762A1 (en) | 2009-06-25 |
| US8422962B2 (en) | 2013-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101897129B (en) | Method and arrangement for adjusting transmission power by-adjusting a gain factor in a communication system | |
| US11540231B2 (en) | Method and device for determining transmission power, and terminal and storage medium | |
| US8462682B2 (en) | Method and arrangement for separate channel power control | |
| US8306567B2 (en) | Fast adaptive power control for a variable multirate communications system | |
| KR100401217B1 (en) | Outer loop/weighted open loop power control in a time division duplex communication system | |
| US8855700B2 (en) | Uplink power control | |
| CN103974399B (en) | For controlling the method and WTRU of the transimission power of WTRU | |
| CN101112011A (en) | Outer loop power control for f-dpch | |
| EP2550828A1 (en) | Uplink load prediction using kalman filters | |
| CN101461153A (en) | Method and apparatus for path imbalance reduction in networks using High Speed Data Packet Access (HSDPA) | |
| EP1810418B1 (en) | Method and arrangement for mutual information based power control | |
| Muhammad et al. | Uplink closed loop power control for LTE system | |
| CN103250356A (en) | Method and apparatus of performing outer loop link adaptation operation | |
| JP2007520908A (en) | Wireless communication system | |
| CN101627554B (en) | Combined open loop/closed loop method for controlling uplink power of a mobile station | |
| CN102077657A (en) | Power control method, equipment and base station thereof | |
| US7649967B2 (en) | Method and device for estimating a signal to interference ratio (SIR) in wideband code division multiple access (WCDMA) systems | |
| CN102316568A (en) | Closed loop power control processing method and base station | |
| CN1797982B (en) | Method for adjusting target SNR of power control in time division duplexing communication system | |
| EP1408635B1 (en) | Method and device for estimating a Signal to Interference Ratio (SIR) in WCDMA systems | |
| CN102547949A (en) | Power control method and device in mobile communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |